garrahan



F. B. GARRAHAN. RUBBER RECLAIMING MACHINE.

APPLICATION FILED JAN- 25,1916. 1,1 95,576, Patented Aug. 22, 1910.

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APPUCATlQN FILED JAN-25,1916- 1 1 95,576. Patented Aug. 22, 1916.

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A TTOR/VEV F. B. GARRAHAN. RUBBER RECLAIMING MACHINE.

APPLICATION FILED JAN-25.1916. 1,195,576.

Patented Aug. 22, 1916.

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A TTOR/VEV FREDERIC B. GARRAHAN, F PATERSON, NEW JERSEY.

RUBBER-BECLAIMING MACHINE.

essrs.

Specification of iLetters Patent.

Patented Ari 22, H916.

Application filed January 25, 1916. Serial No. 74,133.

To all whom it may concern. Be it known that I, FREoERIo B. GARBA- HAN, a citizen of the United States, residing at Paterson, in the county of'fassaic and State of New Jersey, have invented certain new and useful Improvements in Rubber.-

Reclaiming Machines, of which the following is a specification.

"This invention relates to means for straining scrap rubber and the like materials to remove therefrom foreign bodies, such as metal, wood, stone or other hard pieces or particles that have been incorporated therein in the previous uses to which the material may have been put.

One of the objects of the invention is to provide a. straining head which may be attached to any suitable apparatus, such as a rubber insulating machine, having means to force the material into and through the straining head and which shall have a strainer or strainers slidable therein-in its or their own planes, together with means to move said strainer or strainers from time to time so as to shift one part of the straining area out of the straining position and another into straining position to enable cleaning of the former while the straining operation proceeds uninterrupted, the said means in the preferred form of the invention being carried by the straining head so that live strains and stresses incident to the operation of said means shall be assumed wholly by the head.

Another object is to provide a compact, practical and effective means to shift the straining agent when the same comprises a plurality of strainers.

Another object of the invention is to construct each strainer so that while it will be well adapted to withstand the heavy pres sure exerted and to move as easily as pos sible in the guideways provided therefor in said head, it will also be adapted to facilitate the cleaning thereof.

Another object is to provide for the sliding movement of the strainer or strainers in such a way as to avoid leakage of the rubber.

In the accompanying drawings, Figure 1 is a side elevation of a rubber insulating or tubing machine provided with the attachment including my improvements; Fig. 2

is a side elevation and Fig. 3 a front elevation of the head and certain other parts; Fig. 4 is a horizontal sectional view of the head; Fig. 5 is an inside elevation of one of the strainers, parts thereof being shown broken away; Fig. 6 shows fragments of the members of a strainer in longitudinal section; Fig. 7 is a front elevation of said attachment; Fig. 8 is a horizontal sectional fragmentary View of the part of the strainershifting means which includes a certain gear-box; Fig. 9 is a vertical sectional view thereof; and, Fig. 10 is a detail illustrating, partly in section and partly in elevation, a disconnective connection in said means.

0; is the tubing or insulating machine, and 5 its suitably rotated stock screw projecting therefrom.

0 is a suitable head provided with a pas sage d which, when the head is bolted properly in place to the frame of the machine 6!, forms a continuation of the passage 6 of the machine in which its said stock-screw rotates, and receives the outer end of said screw, the head beingchambered for the circulation of a heating fluid for keeping the rubber or the like material as soft as possible during the straining operation, as indicated at j. I y

In the preferred construction passage d discharges in three directions, to wit, longitudinally and laterally (at both sides) of the screw, as at the outlets g and g 9" formed in the head. At each such outlet, as at h, a groove extending vertically is formed in the head from top to bottom thereof, and this groove is covered by a plate 71 having an opening j which approximates in size and shape the size and shape of the corresponding outlet, the plate being secured in place in some substantial manner, as by the screws 71;. Guidewaysare thus formed in 1 which the strainersto be described in detailmay slide vertically. Between the outer face of the head and each platen is a plate of phosphor bronze or the like material that may be renewed as it wears away.

A good form' of strainer that will withstand the heavy pressure imposed thereon and slides as easily as possible in the guideways and at the same time facilitate the cleaning thereof when it becomes clogged l and fails therefore to discharge the cleaned rubber is shown in detail in Figs. 5 and 6. Here on is a. rectangular supporting plate whose horizontal cross-section conforms to that of the corresponding guideway and 1 whose vertical dimension is somewhat more than twice that of'its horizontal dimension,

. m and 0. It is arranged between said plates,

or width; it is formed foraminous as to the major part of its area and has a rectangular recess 1?. formed in its inner side and somewhat greater in area than its foraminous portion. 0 is a rectangular foraminous strainer plate which fits the recess n and has its perforations formed to register with those of the plate m. p is a wire-mesh strainer sheet, having perforations of considerably -finer gage than those of the plates in recess 12, and when the three parts are assembled the back of plate 0 is substantially flush with that of plate m. Plate 0 and sheet p are formed in two sections, being divided horizontally at the middle, as shown in Figs. 5 and 6. Plate 0 is also preferably provided with the studs 9 at top and bottom, which enter holes r in plate m and are adapted to be struck by a hammer or other suitable implement in order to clear plate 0 from recess n. Plate m serves mainly to support plate 0 and sheet p, the former of which holds back, and protects the latter from injury by, the larger particles of metal and other solids in the rubber, and the latter of which holds back the finer particles and shreds of fabric, etc.

The thickness of plate m is a trifle greater than the depth ofthe groove 7:. (Fig. 4) so that as wear occurs on the phosphor bronze plates Z the tightening of the screws 71 will reestablish that intimate sealing contact between the strainer and the outer and inner I faces of the guideway which is necessary to prevent escape of the compressed and more or less soft rubber material-and which in fact extends continuously around each outlet (g', g) of said passage as to each face of the corresponding strainer.

Head 0 is formed with sockets s on each side and these receive the reduced lower endsof four pillars (6 whose reduced upper ends are received by corresponding sockets on the sides of a gear-box it having a removable cover plate 14. When these parts have been assembled nuts '0 are screwed on the upper and lower ends ofthe'pillars, making the head, gear box and pillars a substantial and rigid structure and resisting pressure tending to force the head and gear-box apart. Substantially centrally of and in this box is journaled a shaft w having a coupling head '10 and keyed thereon a pinion w. Meshing with the pinion and arranged with their axes at the apices of an isosceles triangle are three pinions g each splined upon a nutz journaled in the gear-box. Each nut is penetrated and has its threading engaged by that of a threaded rod Or screw 2 penetrating the gear-box and suitably coupled at its lower end to one of the strainer plates m. Forked levers 3 are fulcrumed in the sides of the gear-box and engaged with the respective pinions y, affording means to shift each pinion upwardly out of engagement with the pinion x.

The shaft w may be driven by any suitable means, as by an overhead reversible motor 4 having its shaft 5 coupled with head 11) of shaft w.

In operation, when the strainers become clogged with foreign matter to an extent requiring its removal the motor is driven in the proper direction to cause the strainers to rise or fall, as the case may be, until one of the sections of each plate 0 clears the head 0 and the other sectlon is opposite the outlet for the passage d. The shifting may be done while the stock-screw remains active to force the material forward in the regular way. Thus a great waste of time (characterizing the operation of machines of this class as heretofore constructed, with strainers that were not shiftable or, if so, were shiftable only by hand, and hence. only when the stock-screw was idle) is avoided in the use of my apparatus. When the strainers have been shifted the clogged part of each is cleaned,an operation that is facilitated by the removability of the plate 0 and sheet p.

I am aware that it is not new to shift a straining agent in a rubber straining apparatusto change the straining area from time to time to permit cleaning of the strainer when clogged at one place while the straining operation proceeds with respect to another, as already intimated. But the apparatus heretofore proposed has not been provided with means to shift the straining agent; wherefore the straining operation, on account of the great pressure involved, had to be stopped until the shifting could be accomplished by hand. It is a matter, moreover, of considerable importance that the said means be carried by the straining head and not some other support, not only because it produces compactness and makes the straining apparatus self-contained, but because the strains and stresses incident to shifting the strainers against the resistance of the adhering and greatly compressed mass of rubber are not .then operative to loosen or disrupt the means for securing the head in place.

Should it be necessary or desired for any reason not to shift all of the strainers at once the pinion y corresponding to each strainer that is to remain stationary is by means of lever 3 shifted on its nut .2 until it clears the pinion w.

of mesh with pinion w; in the downward 3 movement no injury can occur through neglect to check it in time, because the shifting Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent is 2- 1. A straining apparatus including, in combination, a straining head having a passage therethrough, means to force the material to be strained through said passage, a strainer slidable in' its own plane in the head across the passage, and means, carried by said head, to shift the strainer in said plane to oppose first one and then another portion of its straining area to said passage.

2. A straining apparatus including, in combination, a sraining head having a passage therethrough, means to force the material to be strained through said passage, a plurality of strainers slidable in their respective planes in the head across said passage, and means, yoking said strainers together and carried by said head, for shifting the strainers in synchrony.

3. A straining apparatus including, in combination, a straining head having a passage therethrough, means to force the material to be strained through said passage, astrainer slidable in its own plane in the head across the passage, a framing carried by the head, and a system of moving parts carried by the framing for shifting the'strainer.

4. A stramlng apparatus including, in

combination, a strainlng head having a passage therethrough, means to force the material to strainer slidable in its own plane in the head across the passage, a framing carried by the head, and a screw-and-nut connection be tween said strainer and framing.

5. A straining apparatus comprising, in combination, a fixed structure including a straining head having a passage therethrough, means to force the material to be strained through said passage, a strainer slidable in its own plane in the head across be strained through. said passage, a'

said passage, and means, including a moving system of parts having a disconnective connection between tWo of them, for shifting the strainer in said plane.

6. A straining apparatus comprising, in combination, a fixed structure including a straining head having a passage therethrough, means to force the material to be strained through said passage, a strainer slidable in its own plane in the head across said passage, means, including a moving system of parts having a disconnectiveconnection between two of them, for shifting the strainer in said plane, and means, controlled by the moving' strainer, for controlling said connection.

7. In combination, with a straining head having a passage therethrough and means to force the material through said passage, a strainer guided in the head for movement in its own plane across said passage and in-- cluding two separable foraminous plates normally held face to face by the head and interlocked against relative movement in their respective planes and one being divided into two sections transversely of the path of movement of the strainer in the head, the strainer being movable in each direction to clear one of said sections or the other from the head.

8. In combination, with a straining head having a passage therethrough and an exte rior groove communicating with and extending crosswise of said passage and with means to force the material through said passage, a plate-like strainer structure slidable in said groove and having a thicknessgreater than the depth of the groove, an apertured means overlapping and forming with said groove a guideway for the strainer, and adjustable means to draw the apertured means toward the head, said strainer having a continuous sealing contact around said passage on one side with the head and on the other with the apertured means.

In testimony whereof I aflix my signature.

FREDERIO B. GARRAHAN. 

